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Testing early Universe model by precise measurement of cosmic strings

Research Project

Project/Area Number 17K14304
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionKanagawa University

Principal Investigator

Yamauchi Daisuke  神奈川大学, 工学部, 助教 (10624645)

Project Period (FY) 2017-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords宇宙ひも / 宇宙マイクロ波背景輻射 / 宇宙物理
Outline of Final Research Achievements

In the context of modern cosmology, cosmic strings, which are one-dimensional topological defects and may have formed during a symmetry-breaking phase transition in the early Universe, are closely related to particle physics and inflation models. Therefore, observational verification of cosmic strings leads to the exploration and clarification of the underlying high-energy physics phenomena. In this study, we investigated the impact on the evolution of cosmological string network by exploring fundamental process such as collisions and intercommutation of cosmic strings to comprehensively explore various types of cosmic strings. In addition, we developed the evaluation method of cosmic strings using current and future observation data.

Academic Significance and Societal Importance of the Research Achievements

これまで宇宙ひもの理論的・観測的研究は特定のモデル(南部・後藤宇宙ひも)の研究のみに着目していたが、本研究課題によって得た成果によって、初めて多様な宇宙ひもタイプにおける基礎物理過程の検証を行うことに成功した。その成果は、当初の予想とは大きく異なっているものであった。宇宙ひもの振る舞いが全くの非自明であることを明らかにしたことで、本研究課題の学術的意義はより高まっている。また、精密宇宙論観測がさまざまに提案されているが、本研究によって、最先端の宇宙論観測手法を取り入れることで宇宙ひもに迫っていく可能性を指摘したことで、既存および将来観測の重要性を増すこととなる。

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (45 results)

All 2022 2021 2020 2019 2018 2017 Other

All Journal Article (22 results) (of which Int'l Joint Research: 11 results,  Peer Reviewed: 18 results,  Open Access: 5 results) Presentation (21 results) (of which Int'l Joint Research: 8 results,  Invited: 10 results) Remarks (1 results) Funded Workshop (1 results)

  • [Journal Article] Second-order peculiar velocity field as a novel probe of scalar-tensor theories2022

    • Author(s)
      Yamauchi Daisuke、Sugiyama Naonori S.
    • Journal Title

      Physical Review D

      Volume: 105 Issue: 6 Pages: 1-16

    • DOI

      10.1103/physrevd.105.063515

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On Lorentz-invariant bispin-2 theories2021

    • Author(s)
      Kimura Rampei、Naruko Atsushi、Yamauchi Daisuke
    • Journal Title

      Physical Review D

      Volume: 104 Issue: 4 Pages: 1-20

    • DOI

      10.1103/physrevd.104.044021

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Unified approach to secondary effects on the CMB B-mode polarization2021

    • Author(s)
      Namikawa Toshiya、Naruko Atsushi、Saito Ryo、Taruya Atsushi、Yamauchi Daisuke
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 2021 Issue: 10 Pages: 029-029

    • DOI

      10.1088/1475-7516/2021/10/029

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Axion cloud decay due to the axion-photon conversion with background magnetic fields2021

    • Author(s)
      Yoo Chul-Moon、Naruko Atsushi、Sakurai Yusuke、Takahashi Keitaro、Takamori Yohsuke、Yamauchi Daisuke
    • Journal Title

      Publications of the Astronomical Society of Japan

      Volume: 74 Issue: 1 Pages: 64-72

    • DOI

      10.1093/pasj/psab110

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Testing gravity theories with cosmic microwave background in the degenerate higher-order scalar-tensor theory2020

    • Author(s)
      Hiramatsu Takashi、Yamauchi Daisuke
    • Journal Title

      Physical Review D

      Volume: 102 Issue: 8 Pages: 083525-083525

    • DOI

      10.1103/physrevd.102.083525

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] UV sensitive one-loop matter power spectrum in degenerate higher-order scalar-tensor theories2020

    • Author(s)
      Hirano Shin’ichi、Kobayashi Tsutomu、Yamauchi Daisuke、Yokoyama Shuichiro
    • Journal Title

      Physical Review D

      Volume: 102 Issue: 10 Pages: 1-15

    • DOI

      10.1103/physrevd.102.103505

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Cosmology with Phase 1 of the Square Kilometre Array; Red Book 2018: Technical specifications and performance forecasts2020

    • Author(s)
      Square Kilometre Array Cosmology Science Working Group: David J. Bacon (including D. Yamauchi)
    • Journal Title

      Publication of Astronomical Society of Australia

      Volume: 37

    • DOI

      10.1017/pasa.2019.51

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] On Lorentz-invariant spin-2 theories2019

    • Author(s)
      Naruko Atsushi、Kimura Rampei、Yamauchi Daisuke
    • Journal Title

      Physical Review D

      Volume: 99 Issue: 8 Pages: 084018-084018

    • DOI

      10.1103/physrevd.99.084018

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Observational signatures of dark energy produced in an ancestor vacuum : Forecast for galaxy surveys2019

    • Author(s)
      Daisuke Yamauchi, Hajime Aoki, Satoshi Iso, Da-Shin Lee, Yasuhiro Sekino, Chen-Pin Yeh
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 05 Issue: 05 Pages: 055-055

    • DOI

      10.1088/1475-7516/2019/05/055

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Large-scale inhomogeneity of dark energy produced in the ancestor vacuum2019

    • Author(s)
      Yue Nan, Kazuhiro Yamamoto, Hajime Aoki, Satoshi Iso, ; Daisuke, Yamauchi
    • Journal Title

      Physical Review D

      Volume: 99 Issue: 10 Pages: 103512-103512

    • DOI

      10.1103/physrevd.99.103512

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Constraining degenerate higher-order scalar-tensor theories with linear growth of matter density fluctuations2019

    • Author(s)
      Shin'ichiro Hirano, Tsutomu Kobayashi, Daisuke Yamauchi, Shuichiro Yokoyama
    • Journal Title

      Physical Review D

      Volume: 99 Issue: 10 Pages: 104051-104051

    • DOI

      10.1103/physrevd.99.104051

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Screening mechanism in degenerate higher-order scalar-tensor theories evading gravitational wave constraints2019

    • Author(s)
      Sinh'ichi Hirano, Tsutomu Kobayashi, Daisuke Yamauchi
    • Journal Title

      Physical Review D

      Volume: 99 Issue: 10 Pages: 104073-104073

    • DOI

      10.1103/physrevd.99.104073

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] CMB Constraints on Stochastic Gravitational-Wave Background at Mpc scales2019

    • Author(s)
      Toshiya Namikawa, Shohei Saga, Daisuke Yamauchi, Atsushi Taruya
    • Journal Title

      Physical Review D

      Volume: 100 Issue: 2 Pages: 021303-021303

    • DOI

      10.1103/physrevd.100.021303

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Redshift space distortions in the presence of non-minimally coupled dark matter2019

    • Author(s)
      Fabio Chibana, Rampei Kimura, Masahide Yamaguchi, Daisuke Yamauchi, Shuichiro Yokoyama
    • Journal Title

      Journal of Cosmology and Astroparticle Physics

      Volume: 10 Issue: 10 Pages: 045-045

    • DOI

      10.1088/1475-7516/2019/10/049

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Lorentz-invariant spin-2 theories2019

    • Author(s)
      Atsushi Naruko, Rampei Kimura, Daisuke Yamauchi
    • Journal Title

      Physical Review D

      Volume: 印刷中 Pages: 1-20

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Large-scale inhomogeneity of dark energy produced in the ancestor vacuum2019

    • Author(s)
      Yue Nan, Kazuhiro Yamamoto, Hajime Aoki, Satoshi Iso, Daisuke Yamauchi
    • Journal Title

      arXiv

      Volume: 1901.11181 Pages: 1-13

    • Related Report
      2018 Research-status Report
  • [Journal Article] Constraining DHOST theories with linear growth of matter density fluctuations2019

    • Author(s)
      Shin'ichiro Hirano, Tsutomu Kobayashi, Daisuke Yamauchi, Shuichiro Yokoyama
    • Journal Title

      arXiv

      Volume: 1902.02946 Pages: 1-13

    • Related Report
      2018 Research-status Report
  • [Journal Article] On the screening mechanism in DHOST theories evading gravitational wave constraints2019

    • Author(s)
      Sinh'ichi Hirano, Tsutomu Kobayashi, Daisuke Yamauchi
    • Journal Title

      arXiv

      Volume: 1903.08399 Pages: 1-6

    • Related Report
      2018 Research-status Report
  • [Journal Article] Scalar-tensor theories and modified gravity in the wake of GW1708172018

    • Author(s)
      Langlois David、Saito Ryo、Yamauchi Daisuke、Noui Karim
    • Journal Title

      Physical Review D

      Volume: 97 Issue: 6 Pages: 1-5

    • DOI

      10.1103/physrevd.97.061501

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Observational signatures of dark energy produced in an ancestor vacuum: Forecast for galaxy surveys2018

    • Author(s)
      Daisuke Yamauchi, Hajime Aoki, Satoshi Iso, Da-Shin Lee, Yasuhiro Sekino, Chen-Pin Yeh
    • Journal Title

      arXiv

      Volume: 1807.07904 Pages: 1-5

    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Journal Article] Y-junction intercommutations of current carrying strings2018

    • Author(s)
      Steer D.A., Lilley Marc, Daisuke Yamauchi, Takashi Hiramatsu
    • Journal Title

      Physical Review D

      Volume: 97 Issue: 2

    • DOI

      10.1103/physrevd.97.023507

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Constraining modified theories of gravity with the galaxy bispectrum2017

    • Author(s)
      Yamauchi Daisuke、Yokoyama Shuichiro、Tashiro Hiroyuki
    • Journal Title

      Physical Review D

      Volume: 96 Issue: 12 Pages: 123516-123516

    • DOI

      10.1103/physrevd.96.123516

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] CMB B-mode in the landscape2022

    • Author(s)
      山内大介
    • Organizer
      Upcoming CMB Observations & Cosmology
    • Related Report
      2021 Annual Research Report
  • [Presentation] Cosmology with the Square Kilometre Array2021

    • Author(s)
      Daisuke Yamauchi
    • Organizer
      4th JSPS core-to-core program, CMB Japan group seminar for young scientists
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Cosmology with higher-order correlation of galaxy clustering2021

    • Author(s)
      Daisuke Yamauchi
    • Organizer
      East Asia SKA Workshop 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Second-order peculiar velocity field as a novel probe of scalar-tensor theories2021

    • Author(s)
      山内大介, 杉山尚徳
    • Organizer
      日本物理学会2021年秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] いよいよ建設開始!SKAと10の科学 --宇宙論--2021

    • Author(s)
      山内大介
    • Organizer
      SKA-Japanウェビナーシリーズ
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 宇宙大規模構造を使った重力理論の検証2020

    • Author(s)
      山内大介
    • Organizer
      ``Testing Gravity THxOBS Japan'' kickoff meeting
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Constraining scale-dependent primordial non-Gaussianities from galaxy power and bispectrum2020

    • Author(s)
      山内大介, 高橋智, 横山修一郎
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Cosmology and dark energy with future HI galaxy surveys2019

    • Author(s)
      Daisuke Yamauchi
    • Organizer
      East Asia SKA Workshop 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Constraining primordial non-Gaussianity with future galaxy surveys2019

    • Author(s)
      Daisuke Yamauchi
    • Organizer
      Theoretical aspects of non-Gaussianity from modern perspectives
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] SKAによる宇宙論2019

    • Author(s)
      山内大介
    • Organizer
      SKA-Japanシンポジウム2019
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 位置天文を用いた背景重力波の制限2019

    • Author(s)
      山内大介
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] SKA cosmology2019

    • Author(s)
      山内大介
    • Organizer
      第8回観測的宇宙論ワークショップ
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Cosmology and dark energy with future HI galaxy surveys2019

    • Author(s)
      Daisuke Yamauchi
    • Organizer
      Cosmological challenges to dark matter, dark energy and galaxy formation
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 位置天文による低周波重力波の性質の検証2019

    • Author(s)
      山内大介
    • Organizer
      「銀河進化と遠方宇宙2019」研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] Testing acestor vacuum fluctuations as the origin of dark energy from galaxy survey2018

    • Author(s)
      D. Yamauchi, H. Aoki, S. Iso, D.-S. Lee, Y. Sekino, C.-P. Yeh
    • Organizer
      Early Universe and Gravitation seminar
    • Related Report
      2018 Research-status Report
  • [Presentation] Testing ancestor vacuum fluctuations as the origin of dark energy from galaxy surveys2018

    • Author(s)
      山内大介, 青木一, 磯暁, Da-Shin Lee, 関野恭弘, Chen-Pin Yeh
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Constraining modified theory of gravity with galaxy bispectrum2018

    • Author(s)
      Yamauchi, D., Yokoyama, S., Tashiro, H.
    • Organizer
      YKIS2018a Symposium : General Relativity -Next Generation-
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] GW170817後のスカラーテンソル理論2018

    • Author(s)
      山内大介
    • Organizer
      若手による重力・宇宙論研究会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Y-junction intercommutations of current carrying strings2017

    • Author(s)
      Yamauchi, D., Steer, D., Lilley, M., Hiramatsu T.
    • Organizer
      JGRG27
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Collisions of superconducting strings with Y-junctions2017

    • Author(s)
      Yamauchi, D., Steer, D., Hiramatsu T.
    • Organizer
      COSMO-17
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 大規模電波サーベイによる宇宙論2017

    • Author(s)
      山内大介
    • Organizer
      日本物理学会2017年秋季大会シンポジウム「低周波電波観測が切り開く宇宙物理学」
    • Related Report
      2017 Research-status Report
    • Invited
  • [Remarks] 宇宙ひもの精密観測による初期宇宙モデルの検証

    • URL

      http://www.n.kanagawa-u.ac.jp/~yamauchi/outreach_strings.html

    • Related Report
      2018 Research-status Report 2017 Research-status Report
  • [Funded Workshop] 「銀河進化と遠方宇宙2019」研究会2019

    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2023-01-30  

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